I've brewed several pumpkin ales, and I always add the pumpkin to the mash. If you are an extract brewer, add it to the steeping grains.
Pumpkin isn't like secondary fruit additions. You get much more utilization of the pumpkin's starch/protein properties from adding it to the mash.
is there anything wrong with racking to the secondary early? the vigorous fermenting seems to have passed, im just worried about fruit flies and want to move it to an air-locked carboy. any suggestions?
Why isn't your primary in an air-locked carboy or something else airtight?? You shouldn't be fermenting in an open container!!